The Process of Decision Making in Chess Volume 2: Practice positions and solutions. Position 10.4

Solve the challenge below:

Diagram 10.4- black has the outside passed pawn, versus white’s more inside passed pawn. The outside passed pawn is in most cases harder to stop in more simplified endings (such as king and pawns), since it requires the stopping king to go to the flank and leave the rest of his pawns possibly vulnerable.
Using the short observation we have just performed, we can say that one of black’s goals is to exchange as many pieces as possible since the more simplified endgame will suit him more than white.

Challenge: can you find a concrete plan to promote this goal?

1... Ne2+ 2. Kg2 Bd4 3. Rb3 Bxe3 4. Rxe3Rxe3 5. fxe3 Rxf1 6. Kxf1 Nc3 7. Kf2 b3. This is an idea, but not much is forced in the position.

1... Nf3+ 2. Kg2 Rxe3 3. fxe3 Nd2

It is a rather forcing move and it focuses on:

- Taking the rooks

- Taking white's dark-squared Bishop which is currently more active than the white-squared Bishop

I agree with @Drichervon, followed by after white re-captures our knight on f1, start progressing our passed pawn to b3 and b2 where it will be protected by our bishop and swing our Rook over to a file and to a1 and force white to take our pawn.

On bouge le cavalier ,supprime les fous de cases noires et gagne : Ce2+ Rg2 Fd4 Tb3 Fxe3 Txe3 Txe3 fxe3 Cc3 et le fou de cases blanches tourne autour du cavalier sans pouvoir le capturer .Les noirs ont donc un gros avantage .